b. Explain the purpose of heat loss and heat gain assessment for buildings, and list out major factors that should be co

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B Explain The Purpose Of Heat Loss And Heat Gain Assessment For Buildings And List Out Major Factors That Should Be Co 1 (156.18 KiB) Viewed 20 times

b. Explain the purpose of heat loss and heat gain assessment for buildings, and list out major factors that should be considered into building heat loss and heat gain assessment respectively? (4 marks) c. Explain practical measures to ensure the air freshness within a building. (2 marks) d. A building wall consists of different materials in layers i-viii (listed according to the sequence from the most outside layer towards the most inside one), where all thermal resistances R are given below (in Fºft</BTUH). If the outdoor and indoor temperature is -15 F° and 70 Fº, what is the temperature at the wall structure surface in Fº? (4 marks) > i. ii. iii. iv. V. vi. vii. viii. Air film outside R=0.9 Exterior shingles R=0.95 Plywood sheathing R=1.1 Building paper used R=0.08 Wall structure itself R=0.90 Wall plaster R=0.40 Insulation R=13.0 Air film inside R=0.7